core: frontend: allow loading parameters from a log file

### Current behaviour

The parameter editor allows loading parameters from a saved parameter file, but that's reliant on having a file backed up to restore/load from, which is not always ready in advance.

### Expected or desired behaviour

Parameters are generally recorded in autopilot logs, so it should be possible to add a "load from log" button to the parameter editor that allows selecting one of the available logs to extract and load the parameters from. This would be particularly useful for restoring to a previous 'known working' state with minimal advance preparation, especially in cases where it's known the date/time when a new feature/functionality started being tested.

### Prerequisites

- [X] I have checked to make sure that a similar request has not already been filed or fixed.